Where should a carbon monoxide detector be placed high or low?

In order to ensure that your home has maximum protection, it's important to have a CO detector on every floor. Five feet from the ground. Carbon monoxide detectors can get the best reading of your home's air when they are placed five feet from the ground. Near every sleeping area.
A.

How far should smoke detector be placed from ceiling?

If this is not possible, install the Smoke Alarm at least 4 inches (102 mm) from the wall or corner. For wall mounting (if allowed by building codes), the top edge of Smoke Alarms should be placed between 4 inches (102 mm) and 12 inches (305 mm) from the wall/ceiling line, below typical “dead air” spaces.
  • How far does a smoke detector have to be from a vent?

    One of the more common installation problems with smoke detectors is installing them too close to air vents. NFPA 72 recommends that they should not be installed closer than 3 feet from any supply air diffuser or return vent. If they are too close to the supply, smoke may not reach the detector.
  • How many smoke detectors do you need per square feet?

    When a very large residence contains floor areas greater than 1,000 square feet (excluding garage areas), the code requires smoke alarms installed on the ceiling, and all points on the ceiling must have a smoke alarm within 30 feet or have an equivalent of one smoke alarm per 500 square feet of floor area.
  • How many smoke detectors do you need in your house?

    Answer: The National Fire Protection Association recommends homes should have smoke alarms installed inside every bedroom, outside each sleeping area and on every level of the home, including the basement. So that means a 2 story, 3 bedroom house needs a minimum of five smoke alarms.
B.

How many smoke detectors do you need in your home?

This means that if you have a four-bedroom house, and all of the bedrooms are accessed from a second-floor hallway, you need to have a smoke detector in each bedroom and one in the hallway outside the bedrooms. One smoke detector must be present on every floor of the house, including basements and attics.
  • Do you need a smoke detector in the garage?

    Heat alarms (detectors) respond to fire, not smoke. They are another useful part of any home fire safety plan. Smoke alarms are not required, or designed for use, in garages. Many heat alarm models can be connected to a home's fire detection system so that if the heat alarm sounds, the smoke alarms will as well.
  • Do you have to have hard wired smoke detectors?

    Homes built before 1992 generally aren't required to have hardwired smoke detectors. However, they still need to have smoke detectors installed, although battery-powered ones are adequate. Homes built in California after 1992 must have hardwired smoke detectors that also have a battery backup.
  • How many smoke detectors do you need in your house?

    Answer: The National Fire Protection Association recommends homes should have smoke alarms installed inside every bedroom, outside each sleeping area and on every level of the home, including the basement. So that means a 2 story, 3 bedroom house needs a minimum of five smoke alarms.
C.

What is the difference between photoelectric and ionization smoke detector?

One is a “fast flame” fire, the other is for smoldering fires. In tests, ionization alarms will typically respond about 30 to 90 seconds faster to “fast-flame” fires than photoelectric smoke alarms. However, in smoldering fires ionization alarms respond an average of 15 to 50 minutes slower than photoelectric alarms.
  • How do you tell what type of smoke detector I have?

    To tell if you have a Photoelectric or Ionization-type alarm:
    1. Look on the front, back, or inside of the unit.
    2. Check for the word “Photoelectric” (or the symbol “P”) or the word “Ionization” (or the symbol “i”)
    3. Note that any indication of the unit containing radiation indicates it is an ionization alarm.
  • How is radiation used in smoke detectors?

    Smoke from the fire is detected by the device, which then gives off an alarm. One type of smoke detector uses americium-241, a source of alpha radiation, to detect smoke. The diagram shows how it looks inside. The alpha radiation ionises the air particles inside the smoke detector.
  • What is a photoelectric smoke detector and what is an ionization?

    The two most commonly recognized smoke detection technologies are ionization smoke detection and photoelectric smoke detection. Ionization smoke alarms are generally more responsive to flaming fires. Smoke enters the chamber, reflecting light onto the light sensor; triggering the alarm.

Updated: 16th October 2019

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